Why did the FW-190A Series Not Perform Well at High Altitude While the Dora Did?

[contrails16]

Hi there! I am just asking this question because my memory is a little foggy. Didn't the A series not perform well above 6000 meters because the Kommandogerat system couldn't function well at high altitude? Did the Jumo 213 in the Dora have an improved Kommandogerat system or was its horsepower advantage what allowed it to perform better at high altitude? Thanks

 

[wuzak]

The Jumo 213 in the Fw 190D had a higher altitude rating than the BMW 801 in the Fw 190A.

 

[tomo pauk]

D9 have had less drag (Cd0 lower by 10% vs. the draggy 190A8), a bit more power above 5 km, and a better ram air intake. All of this combined made the D9 faster, not just on higher altitudes.
The D9 was also faster than 190A9 that have had more power, even at higher altitudes.

 

[windhund116]

The Junker-Jumo 213E engine had a two-stage supercharger & methanol-water boost. Designed for high altitude service. This engine was used in the Fw190D and Ta152.

 

[contrails16]

D9 have had less drag (Cd0 lower by 10% vs. the draggy 190A8), a bit more power above 5 km, and a better ram air intake. All of this combined made the D9 faster, not just on higher altitudes.
The D9 was also faster than 190A9 that have had more power, even at higher altitudes.

Did it still have a Kommandogerat system?

 

[GrauGeist]

The Kommandogerãt system was an engine control unit designed for the BMW801 engine, so no, not with the installation of the Jumo.

 

[tomo pauk]

The Junker-Jumo 213E engine had a two-stage supercharger & methanol-water boost. Designed for high altitude service. This engine was used in the Fw190D and Ta152.

Jumo 213E was not used on Fw 190D of any kind. The Fw 190D-9 used Jumo 213A, engine with 1-stage supercharger.

 

[GrauGeist]

The Ta-152 used the Jumo213E, the closest to that in a Dora, would be the 213F used in the D-11/D-13 model.

 

[Denniss]

The Fw190D/Ta152 had a similar all-in-on control unit with the Motorbediengerät (MBG), developed by Junkers for their 213 engine.
I believe there was no such device for the 211

 

[elbmc1969]

Decent video on the Ta152H, but it touches on the D as well, and it will give you an overview of altitude-performance changes.